Acidic tumor microenvironment in human melanoma.

Area of Science:

• Oncology
• Cancer Metabolism
• Tumor Microenvironment

Background:

• Solid tumors, particularly malignant melanoma, exhibit an acidic tumor microenvironment.
• This extracellular acidosis is primarily caused by deregulated cancer cell metabolism, specifically aerobic glycolysis (Warburg effect).
• Acidic conditions promote the development of acid-resistant melanoma cells with enhanced invasive and metastatic potential.

Purpose of the Study:

• To review recent studies on tumor microenvironment acidification.
• To focus on the specific effects of acidic conditions on human melanoma cells.
• To provide a brief overview of therapeutic strategies targeting tumor acidity.

Main Methods:

• Literature review of recent studies on tumor microenvironment acidification and melanoma.
• Analysis of the impact of extracellular acidosis on melanoma cell properties.
• Synthesis of information on therapeutic approaches.

Main Results:

• Cancer cells' shift to aerobic glycolysis increases production of lactate and carbon dioxide, leading to tumor acidosis.
• Acidic tumor microenvironments select for and promote melanoma cells with higher metastatic capabilities.
• Understanding these effects is crucial given melanoma's high mortality and metastatic rates.

Conclusions:

• Tumor microenvironment acidification is a key factor in melanoma progression and metastasis.
• Targeting metabolic alterations and the acidic milieu presents potential therapeutic avenues for melanoma.
• Further research is needed to fully elucidate the complex interplay between acidity and melanoma aggressiveness.